Transition Metals and Compound Naming

The video tutorial explains how to write formulas and names for ionic compounds, focusing on known and variable charges. It highlights the charges of elements in groups 1, 2, and 3, as well as zinc and silver. The tutorial delves into transition metals, explaining the complexity of their charges due to electron configurations. It introduces the use of Roman numerals to indicate the charge of transition metals in compound names. The video provides examples, such as iron oxide and lead sulfate, to illustrate the process of determining and denoting charges.

Which group in the periodic table always has a +1 charge?

• Group 1

• Group 2

• Group 3

• Group 4

Which two elements have fixed charges due to their electron configurations?

• Copper and Gold

• Zinc and Silver

• Lead and Tin

• Iron and Nickel

Why is it difficult to determine the charge of transition metals?

• They have a stable electron configuration.

• They can lose different numbers of electrons.

• They are nonmetals.

• They are always positively charged.

How is the charge of a transition metal indicated in a compound's name?

• Using a Roman numeral

• Using a suffix

• Using a subscript

• Using a prefix

What is the Roman numeral for the number four?

• V

• VI

• IV

• III

In the compound FeO, what is the charge of iron?

• +1

• +2

• +3

• +4

What is the formula for chromium(III) hydroxide?

• Cr(OH)3

• CrOH

• Cr(OH)2

• CrO3

What is the charge of lead in Pb(SO4)2?

• +2

• +3

• +4

• +5

What is the correct formula for tin(IV) chlorite?

• SnClO2

• Sn(ClO2)2

• Sn(ClO2)4

• SnCl4

When naming a compound with a transition metal, when should a Roman numeral be included?

• Only if the charge is known

• Never

• Only if the charge is unknown

• Always